Today's Message Index:
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1. 09:04 AM - Re: 3300 Install Questions (DaveG601XL)
2. 09:20 AM - Re: 3300 Install Questions (AZFlyer)
3. 06:13 PM - Re: Jabiru electric circuit design, your comments?? (jetboy)
Message 1
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| Subject: | Re: 3300 Install Questions |
Mike,
I did not use any individual RF suppressors for the firewall penetrations like
the manual states. I followed the Bob Nuckolls approach and I don't recall him
mentioning these things. I have no radio interference issues from engine noise.
For the mags, I grounded the shield wire to the closest bolt. I believe I used
bolts that hold the rear engine case on, but unfortunately, I do not have any
pictures showing this detail.
--------
David Gallagher
601 XL/Jabiru 3300
First flight 7/24/08
Upgraded 3/19/10
150+ hours and climbing!
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http://forums.matronics.com/viewtopic.php?p=317408#317408
Message 2
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| Subject: | Re: 3300 Install Questions |
Dave,
Thanks for the feedback...
Apparently the ferrite suppressors are marginally good for RF static from what
others have told me.
Grounding on the engine block has been suggested several times...
Thanks,
Mike
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Mike Miller @ millrml@aol.com
601 XL-B, 3300, Dynon
Remember, "the second mouse gets the cheese"!
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http://forums.matronics.com/viewtopic.php?p=317410#317410
Message 3
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| Subject: | Re: Jabiru electric circuit design, your comments?? |
I don't wish to over-analyze your schematic, however there are some features that
need clarity;
The alternator contactor, rel.3 does not disconnect the AC from the regulator.
If the alternator contactor is open, depending upon the DC bus voltage at the time,
the voltage applied to your capacitor will be more than 40 Volts, and it
might not do nice things to your equipment when the contacts close.
Jabiru manual states the regulator output and sense wires should be tied together
at all times, to prevent this possibility.
Think what might happen if you open the master switch, and the main contactor is
open, and there is more than 6 volts difference between the batt volts and the
DC bus volts. Will Rel.3 coil be energised via rel.1 coil and the battery connection?
do you want this to happen?
The placement of the OVM crowbar module does not look appropriate to me.
I prefer either of 2 published wiring systems; the Jabiru way or the Aerolectric
way, both are acceptable practice for homebuilt aircraft, its when a hybrid
system is attempted that unexpected consequences could result.
Ralph
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Ralph - CH701 / 2200a
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http://forums.matronics.com/viewtopic.php?p=317448#317448
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